000 00343nam a2200109Ia 4500
008 160509s9999 xx 000 0 und d
100 _aBritish Medical Journal
245 _aBritish Medical Journal : 1991 : Volume 303(6806-6816) : Shelf 4.7
260 _bBritish Medical Association
_c1991
300 _a1620p.+
650 _aBritish Medical Journal
999 _c5194
_d5194